We are a fee-based, growth-oriented master limited partnership formed by BP Pipelines, an indirect wholly owned subsidiary of BP, to own, operate, develop and acquire pipelines and other midstream assets. Our assets consist of interests in entities that own crude oil, natural gas, refined products and diluent pipelines and refined product terminals serving as key infrastructure for BP and other customers to transport onshore crude oil production to BP's Whiting Refinery and offshore crude oil and natural gas production to key refining markets and trading and distribution hubs. Certain of our assets deliver refined products and diluent from the Whiting Refinery and other U.S. supply hubs to major demand centers.
We have historically generated substantially all of our revenue under long-term agreements or FERC-regulated generally applicable tariffs by charging fees for the transportation of products through our pipelines. Substantially all of our aggregate revenue on BP2, Diamondback and River Rouge is supported by commercial agreements with BP Products. BP Products has entered into minimum volume commitment agreements with respect to BP2, River Rouge and Diamondback that have terms running through December 31, 2020. We also have a second minimum volume commitment agreement on Diamondback, with a term running through June 30, 2020. BP Pipelines also granted us a seven-year ROFO through 2024 with respect to its retained ownership interest in Mardi Gras and all of its interests in midstream pipeline systems and assets related thereto in the contiguous United States and offshore Gulf of Mexico that are owned by BP Pipelines. We refer to these assets collectively as the "Subject Assets".
Our primary business objectives are maintaining the safe and reliable operation of our assets to generate stable and predictable cash flows and increase our quarterly cash distribution per unit over time while maintaining a conservative balance sheet.